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3.5. Limiting some EarthCache types

We try to prevent too many EarthCaches about the same topic. New submissions for the following topics will be considered only if they provide a unique earth science lesson.

Note: Local limitations may vary. For example, Yellowstone National Park has many EarthCaches about thermal water features like geysers and hot springs, new submissions need teach something unique to be accepted.

Building stones We only accept EarthCaches about building stones if the lesson is about a geological feature or structure within the building stone. Examples: Minerals, fossils, cross-bedding, and cave fill.
We do not accept generic lessons about the stone’s type, formation, or origin alone. We do not accept an emphasis on cultural or historical significance
Watershed divides and aquifiers We accept major watershed divides that demonstrate a clear connection between the divide and the visible local geology.
River confluences We accept major river confluences that demonstrate a clear connection between the river confluence and the visible local geology.
Waterfall classification We no longer accept EarthCache submissions that feature various types of waterfalls with a logging task asking to identify the type of waterfall. We do accept waterfall EarthCaches with specific information about the local geology and related logging tasks.
Artesian wells/springs We do not accept general descriptions of how an artesian well or spring forms. The EarthCache should include details about the geological conditions that caused the specific artesian well/spring to form at the location.
Note: If there is nothing to see at the site except for a building or an information board, the EC will not be accepted.
Glacial erratics We accept EarthCaches about glacial erratics only if they focus on the relationship between the blocks and the surrounding geology. Logging tasks should examine or identify how the action of the glaciers brought the erratics to the location.
U.S. river gauging stations We no longer accept new submissions.

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